I never questioned arbitrarily using USMC, USN etc. on a product, or does the Marine Corp actually endorse this on some level?
Do these corp's even have a copyright on their symbols?
https://www.hqmc.marines.mil/Agenci...ant/Marine-Corps-Trademark-Licensing-Program/ .
The other branches have similar. They usually just check that a product isn't offensive, and a few other things, but don't step in as far as quality, etc.....